The principal duty of the United Nations is to safeguard the peace of the world.

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问题 The principal duty of the United Nations is to safeguard the peace of the world.

选项 A、primary
B、prime
C、privileged
D、precedent

答案A

解析本题中，principal的意思是“首要的，主要的”。四个选项中，primary和prime都有“主要的，最重要的”意思，但prime主要用来修饰比较具体的名词，如a prime example，the prime suspect。而primary则主要用来修饰比较抽象的名词，如primary concern，primary responsibility。privileged的意思是“有特权的”；precedent的意思是“先例”，是个名词。只有A符合题意。

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The principal duty of the United Nations is to safeguard the peace of the world.

考博英语

Readthefollowingparagraphandthenwritearesponsepaperofabout250to300Englishwords.Whenthereisaheavyraini

AconsiderablepartofFacebook’sappealstemsfromitsmiraculousfusionofdistancewithintimacy,ortheillusionofdistance

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AlthoughmanypeoplespeakEnglish,theydon’tpronounceitorspellthewordtheyusethesameway.TheUnitedStates,in【C1】__

SouthKorea’shagwon(privatetutoringacademies)crackdownisonepartofalargerquesttotamethecountry’scultureofeducati

Exportofhandicraftproductsisthemainstayofthecounty’seconomy.

IndustrialproductionmanagerscoordinatetheresourcesandactivitiesrequiredtoproducemillionsofgoodseveryyearintheU

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